[X10-developers] A question about native java code integration

[Tetsu S. <tet...@gm...>]

  Hello everyone,

I have a question on accessing array object through native java code 
integration feature which is available in version 2.0.4. Hope you can 
help out there.

I have following X10 code:

     @Native("java", "Stub.send(#1, #2)")
     static native def send(recv:String, args:Rail[Any]):Any;

And after compile the code, I get following Java code:

     native static java.lang.Object
                  send(
                  final java.lang.String recv,
                  final x10.core.Rail<java.lang.Object> args);

Please notice that the Rail[Any] in X10 is converted to 
x10.core.Rail<java.lang.Object> in Java.
It means at the runtime the X10 code expect a Java method with 
x10.core.Rail as parameter.

Is it appropriate code generation?
IMHO, the Rail object should be convert to an array in Java, just like 
the Rail[String] parameter in X10 main method is translated to String[] 
object.

Well, if the above code generation is correct,
how can I create a corresponding Java method that uses the x10.core.Rail 
object in java?
I had tried to compile such Java code with X10 runtime library 
(X10_HOME/lib/x10.jar) but failed.

Thanks in advanced.
-Tetsu